Abstract: The present invention relates to the use of substituted benzamides of formula (1): ##STR1## in which: A is linear or branched C.sub.1 -C.sub.3 alkyl; allyl or diethylaminoethyl;R.sub.1 is hydrogen or methyl, andZ-- is --NH--, --O-- or --S--,and of their pharmacologically acceptable salts for modifying gastric motility.